[CRIU] [PATCH] zdtm: ipc_namespace: Bound min/max for mqueue/msg_max

[Andrew Vagin]

Acked-by: Andrew Vagin <avagin at parallels.com>

On Tue, Mar 05, 2013 at 11:12:58PM +0400, Cyrill Gorcunov wrote:
> Otherwise
>  | 11:03:13.524: 19446: ERR: ipc_namespace.c:212: Can't write 0 into /proc/sys/fs/mqueue/msg_max (errno = 22 (Invalid argument))
>  | 11:03:13.524: 19446: ERR: ipc_namespace.c:273: Failed to randomize ipc namespace tunables (errno = 22 (Invalid argument))
>  | 11:03:13.524: 19446: ERR: ipc_namespace.c:336: Failed to randomize ipc ns before migration (errno = 22 (Invalid argument))
>  | 11:03:13.527: 19445: ERR: test.c:298: Test exited with unexpectedly with code 1 (errno = 4 (Interrupted system call))
> 
> https://bugzilla.openvz.org/show_bug.cgi?id=2530
> 
> Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
> ---
>  test/zdtm/live/static/ipc_namespace.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/test/zdtm/live/static/ipc_namespace.c b/test/zdtm/live/static/ipc_namespace.c
> index b660efc..872dea7 100644
> --- a/test/zdtm/live/static/ipc_namespace.c
> +++ b/test/zdtm/live/static/ipc_namespace.c
> @@ -265,7 +265,7 @@ static int rand_ipc_ns(void)
>  	if (!ret)
>  		ret = rand_ipc_sysctl("/proc/sys/fs/mqueue/queues_max", (((unsigned)lrand48()) % 1023) + 1);
>  	if (!ret)
> -		ret = rand_ipc_sysctl("/proc/sys/fs/mqueue/msg_max", (unsigned)lrand48() & (32768 * sizeof(void)/4 - 1));
> +		ret = rand_ipc_sysctl("/proc/sys/fs/mqueue/msg_max", ((unsigned)lrand48() % 65536) + 1);
>  	if (!ret)
>  		ret = rand_ipc_sysctl("/proc/sys/fs/mqueue/msgsize_max", ((unsigned)lrand48() & (8192 * 128 - 1)) | 128);
>  
> -- 
> 1.8.1.2
>